The Tunisia Post Office Collection of Sarawak 1899 to 1932
The 7 sets listed below include all stamps sent to the UPU for distribution during the period.
3 sets show the normal SPECIMEN overprint or perforation applied by the printers. However, the other 4 sets were sent to the UPU in mint condition and have been handstamped SPECIMEN type TUN1 in semi-bold sans-serif caps (12.8x2.6mm) by the Tunisian Receiving Postal Authority after arrival from the UPU and are UNIQUE in this form.

SAR008: Sarawak

1888–1897 POSTAGE / & REVENUE group of 12 values (excluding the 4c and 6c which are not included in the description in the October 1976 Robson Lowe auction catalogue) ~ handstamped 'SPECIMEN' type BEC2a by the Bechuanaland postal authority ~ some rather light handstamp impressions and a little fading in places ~ nevertheless an attractive and unique set ~ SG8/21

1899–1908 POSTAGE / POSTAGE 1c to $1 set of 12 and unissued 5c ~ overprinted 'CANCELLED' type D4a ~ the 16c with diagonal crease that does not show from the front otherwise all very fine ~ believed to be UNIQUE ~ SG37–48.